Three entities cannot be saved (the Teigha plugin reports an exception).

To check which ones, you can save the drawing under a new name and open it again in a new tab.

Such errors are due to invalid entities.Ideally, this should not happen, as QCAD should prevent you from creating invalid entities. If you can figure out what type of entities were not saved, that might be helpful for me to fix the problem.

Ok - the bad boy (entity) seems to be a line in a Library item.If I insert this item ones in my drawing - I get one Saving Warning.If I put the same item 5 times in my drawing - I get 5 warnings with 5 different numbers.